Turbine-wheel.



R. WARRINER.

TURBINE WHEEL. 7 APPLICATION FILED AUG-27. 1917.

Patented Sept. 24, 1918.

Foo? [7206 w Mi? 9 um i 'lED STATES PATENT orr on itonnm: wAnnin-Eii, orQUINCY, MAssAoHusE'r'rs, Assisnon ro BETHLEHEM SHIPIBUILDINGconronn'rroiv, TIOZN' or DELAWARE.

TURBINE-WHEEL.

or QUiivcY, MASSACHUSETTS, aooitroita Specification of Letter's'Patent.i Patented 24 191 8,

Application filed August 27; 1917. Serial No. 188366.

To all whom it may concern:

Be it known that I, ROBERT 'WARRINER,

a citizen .of the United States, residing at Quincy, in the county ofNorfolk and State of Massachusetts, have invented new and usefulImprovements in Turbine-Wheels, of which the following is aspecification.

This invention relates to an improved con-. struction of turbine wheeland the blades therefor, whereby said blades may be readily attached tothe body portion of the wheel and firmly held in position thereon.

The object of the invention is to provide a turbine wheel withdetachable blades which may be easily manufactured and which gives amaximum amount of shear to the blades and to the wheel and a maximumamount of bearing surface to said blades, at the same time only slightlyreducing the strength of the wheel and of the blades.

To these ends the invention consists in a turbine wheel and bladestherefor constructed and attached in a manner hereinafter fully setforth in the specification, and particularly the invention consists inthe form of blades and in the combination of said blades with the bodyportion of the wheel, all as hereinafter set forth in the specificationand particularly as pointed out in the claim.

Referring to the drawings:

Figure 1 is a front elevation of a portion of a turbine wheel and bladestherefor enibodying my invention.

Fig. 2 is a sectional elevation taken on line 22 of Fig. 1.

Fig.v 3 is a sectional plan taken on line 33 of Fig. 2. V

Fig. 4: is a detail sectional plan developed and taken on line 44 ofFig. 2.

Fig. 5 is a sectional elevation taken on line 55 of Fig. 1.

Fig. 6 is a sectional elevation similar to Fig. 2 showing 'a modifiedform of my invention.

Like numerals refer to like parts throughout the several views of thedrawings.

In the drawings, Figs. 1 to 5, inclusive, 10 is the body portion of thewheel, 11 is the rim thereof, 12 is an annular flange on said rimprovided with oppositely disposed concentric grooves 13. The rim 11 isprovided with a pair of annular grooves 1 k in its periphery. 15 areturbine blades, each of which is provided in its inner end with a slot16 extending transversely thereof-and in the opposite edges of said slotare provided oppositely disposed teeth 17 which fit into the concentricgrooves 13 upon the flange 12. One face 18 of each tooth of a bladeextends at right angles to the median axial line A-A and the other face19 of the same tooth extends at an acute angle to the face 18. The innerends 20 of each of the blades 15 project into the annular grooves 14.

For substantially the thickness of one turbine blade the grooves 13 areinterrupted, a pair of oppositely disposed slots 21 extendingtransversely of the flange 12, and a looking member 22 is provided whichis of substantially the same thickness as the turbine blades and fitsinto said slots 21. The looking member 22 is locked to the flange 12 by'cross-pins 23. The blades are attached to the wheel in the followingmanner: Assuming the locking member 22 to be disconnected from the wheelthe blades are slipped onto the flange 12 at that portion thereof wherethe slots 21 are located until the teeth 17 come into alinement with thegrooves 13. The blades are then moved circumferentially on the wheelupon the flange 12 and the teeth 17 enter the grooves 13. When all ofthe blades are attached to the wheel they will extend completely aroundthe flange 12, with the exception of the space occupied by the slots 21,and this space will be filled up by slipping into said slots the lockingmember 22, which is then looked to the flange 12 and to the adjacentblades by means of the crosspins 23.

In Fig. 6 a modified form of my invention is illustrated in which theouter edges 24 of the turbine blade 25 are flush with the opposite facesof the wheel 26. Otherwise the construction is substantially the same inthe form of my invention illustrated in Fig. 6 as in the formhereinbefore described and illustrated in Figs. 1 to 5 inclusive.

Having thus described my invention, what I claim and desire by LettersPatent to secure is: p

A turbine wheel, an annular flange extending around the periphery ofsaid turbine wheel, said flange being provided with a plurality ofoppositely disposed concentric grooves, said wheel also being providedwith, a pair of annular grooves in its periphery and located at the baseof said flange, a plurality of turbine blades, each of said bladeshaving a slot extending transverselythrough the inner end thereof, and aplurality of oppositely disposed teeth on the opposite edges of saidslot, said, teeth projecting into said concentric grooves,v the innerends of said blades on opposite sides of each of their respective slotsprojectingsinto and fitting 10 said annular grooves in the periphery ofsaid ROBERT WARRINER WVitnesses ALIGEL'M; LANE,

MARY E. MAHONEY.

l Copiesof =,t11:is patent-maybe obtained 401' five cents veach;byzaaddressingyethe lommissionenfofiIatehts,

Washington, D, 0.

